出版时间:2010-4 出版社:世界图书出版公司 作者:波普 页数:771
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前言
This book is primarily intended as a graduate text on turbulent flows forengineering students,but it may also be valuable to students in atmosphericsciences,applied mathematics,and physics,as well as to researchers andpracticing engineers.The principal questions addressed are the following.(i) how do turbulent flows behave?(ii)HOW can they be described quantitativelv?(iii)What are the fundamental physical processes involved?(iv)HOW can equations be constructed to simulate or model the behaviorof turbulent flows?In 1 972 Tennekes and Lumley produced a textbook that admirably ad. dresses the first three of these questions .In the intervening years. due inpart to advances in computing,great strides have been made toward pro-viding answers to the fourth question. Approaches such as Reynolds-stressmodelling,probability-density-function(PDF)methods,and large-eddy sim-ulation(LES)have been developed that,to an extent,provide quantitativemodels for turbulent flows.Accordingly,here(in Part II)an emphasis isplaced on understanding how model equations can be constructed to de.scribe turbulent flows:and this objective provides focus to the first threequestions mentioned above(which are addressed in Part I).However,incontrast to the book by Wilcox f1993),this text iS not intended to be apractical guide to turbulence modelling.Rather,it explains the concepts anddevelops the mathematical tools that underlie a broad range of approaches.There iS a vast literature on turbulence and turbulent flows,with manyworthwhile questions addressed by many difierent approaches.
内容概要
本书是一部研究生湍流教程,是以作者在Cornell大学数年的教学讲义为基础,用最新颖的观点,全面综合讲述湍流这一流体动力学的重要组成部分。全书的内容分为两个组成部分,并且附有大量的附录,第一部分集中介绍湍流的基本知识,其工作原理,以及如何量化,也包括基本物理过程;第二部分介绍了跟湍流模型和模拟有关的各种方法;附录部分增加了理解本书所必需的数学技巧。目次:(第一部分)基础:导引;流体运动方程;湍流的统计描述;均值流动方程;自由剪切流;湍流运动尺度;壁流;(第二部分)模型和仿真:模型和仿真引入;直接数值模拟;湍流涡粘度模型;雷诺应力及其相关模型;PDF方法;大涡模拟;(第三部分)附录。 读者对象:适用于工程运用物理专业研究生水平的学生,应用数学专业,物理,海洋学、大气科学等方向的科研人员。
作者简介
作者:(美国)波普(Stephen B.Pope)
书籍目录
List of tables Preface Nomenclature PART ONE: FUNDAMENTALS 1 Introduction 1.1 The nature of turbulent flows 1.2 The study of turbulent flows 2 The equations of fluid motion 2.1 Continuum fluid properties 2.2 Eulerian and Lagrangian fields 2.3 The continuity equation 2.4 The momentum equation 2.5 The role of pressure 2.6 Conserved passive scalars 2.7 The vorticity equation 2.8 Rates of strain and rotation 2.9 Transformation properties 3 The statistical description of turbulent flows 3.1 The random nature of turbulence 3.2 Characterization of random variables 3.3 Examples of probability distributions 3.4 Joint random variables 3.5 Normal and joint-normal distributions 3.6 Random processes 3.7 Random fields 3.8 Probability and averaging 4 Mean-flow equations 4.1 Reynolds equations 4.2 Reynolds stresses 4.3 The mean scalar equation 4.4 Gradient-diffusion and turbulent-viscosity hypotheses 5 Free shear flows 5.1 The round jet: experimental observations 5.2 The round jet: mean momentum 5.3 The round jet: kinetic energy 5.4 Other self-similar flows 5.5 Further observations 6 The scales of turbulent motion 6.1 The energy cascade and Kolmogorov hypotheses 6.2 Structure functions 6.3 Two-point correlation 6.4 Fourier modes 6.5 Velocity spectra 6.6 The spectral view of the energy cascade 6.7 Limitations, shortcomings, and refinements 7 Wall flows 7.1 Channel flow 7.2 Pipe flow 7.3 Boundary layers 7.4 Turbulent structures PART TWO: MODELLING AND SIMULATION 8 An introduction to modelling and simulation 8.1 The challenge 8.2 An overview of approaches 8.3 Criteria for appraising models 9 Direct numerical simulation 9.1 Homogeneous turbulence 9.2 Inhomogeneous flows 9.3 Discussion 10 Turbulent-viscosity models 10.1 The turbulent-viscosity hypothesis 10.2 Algebraic models 10.3 Turbulent-kinetic-energy models 10.4 The k-εmodel 10:5 Further turbulent-viscosity models 11 Reynolds-stress and related models 11.1 Introduction 11.2 The pressure-rate-of-strain tensor 11.3 Return-to-isotropy models 11.4 Rapid-distortion theory 11.5 Pressure-rate-of-strain models 11.6 Extension to inhomogeneous flows 11.7 Near-wall treatments 11.8 Elliptic relaxation models 11.9 Algebraic stress and nonlinear viscosity models 11.10 Discussion 12 PDF methods 12.1 The Eulerian PDF of velocity 12.2 The model velocity PDF equation 12.3 Langevin equations 12.4 Turbulent dispersion 12.5 The velocity-frequency joint PDF 12.6 The Lagrangian particle method 12.7 Extensions 12.8 Discussion 13 Large-eddy simulation 13.1 Introduction 13.2 Filtering 13.3 Filtered conservation equations 13.4 The Smagorinsky model 13.5 LES in wavenumber space 13.6 Further residual-stress models 13.7 Discussion PART THREE: APPENDICES Appendix .4 Cartesian tensors A.1 Cartesian coordinates and vectors A.2 The definition of Cartesian tensors A.3 Tensor operations A.4 The vector cross product A.5 A summary of Cartesian-tensor suffix notation Appendix B Properties of second-order tensors Appendix C Dirac delta functions C.1 The definition of δ(x) C.2 Properties of rS(x) C.3 Derivatives of rS(x) C.4 Taylor series C.5 The Heaviside function C.6 Multiple dimensions Appendix D Fourier transforms Appendix E Spectral representation of stationary random processes E.1 Fourier series E.2 Periodic random processes E.3 Non-periodic random processes E.4 Derivatives of the-process Appenthix F The discrete Fourier transform Appendix G Power-law spectra Appendix H Derivation of Eulerian PDF equations Appendix I Characteristic functions Appendix J Diffusion processes Bibliography Author index Subject index
章节摘录
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